GROWTH OF THIN Ni FILMS ON THE W(110) SURFACE
Xu Mingde and R. J. Smith
Physics Department, Montana State University, Bozeman, MT 59717*
.
The growth of thin Ni films on the W(110) surface was studied to look for any
adsorbate-induced structural modifications of the W substrate which might play a role in the
modified magnetic and catalytic properties of the Ni film, and because these two materials
are excellent candidates for forming metallic superlattices with atomically abrupt interfaces.
We performed experiments using high-energy ion backscattering and channeling together with
X-ray photoemission spectroscopy and low energy electron diffraction. The initial growth of
the Ni film on W(110) at room temperature appears to be in a double-layer mode, which
differs significantly from the growth modes reported previously. The double layer grows in a
coincidence structure on the W substrate. The film assumes the bulk Ni structure beginning
at a coverage of about 5 ML based on the observation of Ni-Ni shadowing beginning at 7.7
ML for a normally incident ion beam. We observed that the W(110) substrate structure is not
altered by the adsorption of Ni atoms, which supports a model for the interface having an
atomically abrupt transition at room temperature.
*Work supported by NSF
Journal of Vacuum Science and Technology A9, 1828 (1991)
For information on this publication or to request a reprint send mail to smith@physics.montana.edu
Return to the Ion Beams Publication List
Return to the Ion Beams Home Page
Page Maintained by Dick Smith
Send mail to Smith@physics.montana.edu
Last Updated:20 May 1996